R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road

Reply
 
Thread Tools Search this Thread
Old 01-11-2012, 01:00 PM   #1216
Tech Apprentice
 
orci77's Avatar
 
Join Date: May 2010
Location: Germany
Posts: 86
Default

As long as you use the same method you are fine.
If you measure different from day to day you get lost.
Also comparison is difficult because it is not clear how and where exactly everybody measures.

Till now I just worked with the downstop.
Fine for me. Because if I adjust it to a different downstop I get the behaviour in the direction I want and I can reproduce it.
Short: I dont mind at the moment what the droop is.
__________________
Xray T3'012 + Nosram Pearl SpecRacing V2 + LRP X12 17,5T / X11 9,5T / X11 6,5T
Team Associated SC10 + Nosram Matrix Reverse + LRP X11 13,5T
3Racing F1-09 + LRP Sphere + LRP X11 17,5T
orci77 is offline   Reply With Quote
Old 01-11-2012, 03:27 PM   #1217
Tech Fanatic
 
kakaroctt's Avatar
 
Join Date: Feb 2009
Location: DMCS~drcc team
Posts: 817
Trader Rating: 9 (100%+)
Default

Quote:
Originally Posted by orci77 View Post
As long as you use the same method you are fine.
If you measure different from day to day you get lost.
Also comparison is difficult because it is not clear how and where exactly everybody measures.

Till now I just worked with the downstop.
Fine for me. Because if I adjust it to a different downstop I get the behaviour in the direction I want and I can reproduce it.
Short: I dont mind at the moment what the droop is.
+1
now i have to think like u...from the discussion above,seems like droop is not as essential as downstop...
__________________
LEGGERE LE ISTRUZIONI PRIMA DELL' USO !
kakaroctt is offline   Reply With Quote
Old 01-11-2012, 04:12 PM   #1218
Tech Master
 
HarryLeach's Avatar
 
Join Date: Feb 2009
Location: Hampton, VA, USA
Posts: 1,596
Send a message via AIM to HarryLeach
Default

Droop and downstop both refer to the amount of suspension arm down travel your setup allows, but are measured in different ways, at different times, and for different reasons.

If you're trying to imitate someone else's setup, you need to know the amount of droop [suspension downtravel/ chassis uptravel allowed, usually in mm over ride height] they're using, because droop takes into account ride height, tire size, insert firmness, etc. If you use someone else's setup and downstop settings, and you're not using that person's tires, you're not truly running their setup.

If you ONLY measure and change your setup with setup wheels or measuring blocks on a setup station, downstop is a repeatable method to set your suspension down travel. Unless you're incredibly lucky to have a set of tires end up at ride height without any shock spring adjustments ever, every time you re-adjust ride height to compensate for tire insert compression and tire carcass thinning, your also going to be taking droop away.


Bottom line, you can't use one method exclusively over the other. I start by setting downstop, then I set ride height, check and set the droop I want over ride height [ORH], then re-check my downstop to make sure left and right suspensions are set identical, then put the car on the track. After each run, recheck ride height and droop before making any other changes to the car, both can cause handling issues if they're not right.
__________________
Privateer racing lots of stuff.
Remember kids, racing isn't fair!
HarryLeach is offline   Reply With Quote
Old 01-11-2012, 06:32 PM   #1219
Tech Master
 
gonzo416's Avatar
 
Join Date: Aug 2003
Posts: 1,938
Trader Rating: 39 (98%+)
Default

OK, This DROOP and DOWNSTOP thing gets a little crazy. My opinion: I think "DOWNSTOP" is used by XRAY and measured at the arms and is a generic measurement. Droop is more of an actual tuning option. Droop will limit the uptravel of the chassis to assist in weight transfer. Such as if you need a little more steering you might use less up travel (which would be more droop) in the front of the chassis. I just wonder why downstops get measured with droop blocks,(Kind of like why do we park in a driveway and drive in a parkway.)? It should be standardized as droop and measured above ride height so it would end all confusion and the extra work of setting downstops then setting droop. Just the input of a club racer always willing to learn more.
gonzo416 is offline   Reply With Quote
Old 01-11-2012, 06:46 PM   #1220
Tech Fanatic
 
Join Date: Oct 2004
Location: Connecticut
Posts: 783
Default

Technically droop is referred to as down travel. Meaning how far the wheel or shock will travel down. Up travel is adjusted by shortening or making the shock longer.If you shorten the shock the useable shock shaft is shorter there for allowing the wheel to travel upwards less. Use this when you get a lot of roll to reduce roll. it will keep the chassis on the weighted side (outside of turn) from compressing so much that the chassis scrapes the ground.

And for the record, I set ride height, then do droop by raising the chassis to get the measurement over ride height. If I then feel the car is rolling to much you can fine tune the roll with the shock length. However you will need to go back and reset ride height and droop. I did like when the Losi JRXS had separate screws for up travel and down travel. It was easier.

Downstops = the point at which you set the stop of downward wheel travel.
Droop = the amount the chassis will droop from a fully extended suspension to ride height.

Last edited by DJG24; 01-11-2012 at 07:07 PM.
DJG24 is offline   Reply With Quote
Old 01-11-2012, 09:25 PM   #1221
Tech Regular
 
Join Date: Apr 2009
Location: Norwalk CA
Posts: 257
Trader Rating: 21 (89%+)
Default Gear diff oil

I have a t3 11 and was wondering what oil u guys are using in your gear diffs. I run an asphalt long track medium bite. Looking for a starting point thx..
__________________
XRAY T3 - XRAY 009 - SLASH - TEKIN - CIRTIX - MUGEN MTX4R - DM1
www.teamnitronic.com - oc circuit racing - CALRA CEWAY
RC4ODC is offline   Reply With Quote
Old 01-11-2012, 10:13 PM   #1222
Tech Regular
 
bigdadracing's Avatar
 
Join Date: Jul 2007
Location: the happiest place on earth
Posts: 406
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by RC4ODC View Post
I have a t3 11 and was wondering what oil u guys are using in your gear diffs. I run an asphalt long track medium bite. Looking for a starting point thx..
700cst
__________________
rcamerica/xray/ team powers/bsr tires/ slapmaster tools/ bigdads garage/cheep beer/ mykeart paint works / team pop a top

suport your local hobby shop because ebays track is hard to find !!!!!!!!
Russ Jacobson
bigdadracing is offline   Reply With Quote
Old 01-12-2012, 06:17 AM   #1223
Tech Elite
 
M-Technic's Avatar
 
Join Date: Sep 2007
Location: Palm Beach, FL
Posts: 2,562
Trader Rating: 15 (100%+)
Default

Quote:
Originally Posted by RC4ODC View Post
I have a t3 11 and was wondering what oil u guys are using in your gear diffs. I run an asphalt long track medium bite. Looking for a starting point thx..
I run 700cst in modified. I would probably run 1000-1500cst in stock.
__________________
RCAmerica | Xray | Hudy | Radiopost | Speed Passion USA | Trinity | P3 Graphics
M-Technic is offline   Reply With Quote
Old 01-12-2012, 05:05 PM   #1224
Tech Elite
 
haywood's Avatar
 
Join Date: Dec 2008
Location: Minnesota
Posts: 2,781
Trader Rating: 48 (100%+)
Default Tweak

Got it!
__________________
Hobbywing / Team Scream / Progressive Rc / Ko Propo / MotivRc / Dri-Fit Mafia /

Last edited by haywood; 01-12-2012 at 05:50 PM.
haywood is offline   Reply With Quote
Old 01-12-2012, 05:24 PM   #1225
Tech Elite
 
Johnny Wishbone's Avatar
 
Join Date: Feb 2006
Posts: 3,362
Trader Rating: 6 (100%+)
Default

Quote:
Originally Posted by haywood View Post
To get the rear of the car level on the tweak station the rear collars are way off from side to side. I measured the shocks and they are the same.
FYI you do know that part of leveling out the car is a combination of adjusting not only the left rear shock but in combination with the right front shock. Then a fine tune adjust between the 2 rear ones to get the final level out. Also equal shock length is very critical of these adjustments as well. And finally making sure your springs are close in length and stiffness.
__________________
Gary Lanzer
Team VBC HK
Team R1WURKS
EMR Factory LLC
AWESOME Graphics
Johnny Wishbone is offline   Reply With Quote
Old 01-12-2012, 06:34 PM   #1226
Tech Adept
 
Join Date: Jan 2011
Posts: 163
Trader Rating: 1 (100%+)
Default

do you guys know if a pain the windows black on my bodies would that be roar legal
f1o7x9 is offline   Reply With Quote
Old 01-12-2012, 07:38 PM   #1227
Regional Moderator
 
CarbonJoe's Avatar
 
Join Date: Jul 2006
Posts: 2,660
Default

Quote:
Originally Posted by f1o7x9 View Post
do you guys know if a pain the windows black on my bodies would that be roar legal
No, the windows must be clear to be ROAR legal.
__________________
*** The Gate - Celebrating 7 years at the same location ***
The difference between genius and stupidity is that genius has its limits. - Albert Einstein
Understeer is when you hit the wall with the front of the car and oversteer is when you hit the wall with the rear of the car
CarbonJoe is offline   Reply With Quote
Old 01-12-2012, 08:13 PM   #1228
Tech Master
 
gonzo416's Avatar
 
Join Date: Aug 2003
Posts: 1,938
Trader Rating: 39 (98%+)
Default

Quote:
Originally Posted by DJG24 View Post
Technically droop is referred to as down travel. Meaning how far the wheel or shock will travel down. Up travel is adjusted by shortening or making the shock longer.If you shorten the shock the useable shock shaft is shorter there for allowing the wheel to travel upwards less. Use this when you get a lot of roll to reduce roll. it will keep the chassis on the weighted side (outside of turn) from compressing so much that the chassis scrapes the ground.

And for the record, I set ride height, then do droop by raising the chassis to get the measurement over ride height. If I then feel the car is rolling to much you can fine tune the roll with the shock length. However you will need to go back and reset ride height and droop. I did like when the Losi JRXS had separate screws for up travel and down travel. It was easier.

Downstops = the point at which you set the stop of downward wheel travel.
Droop = the amount the chassis will droop from a fully extended suspension to ride height.
you're rite, it's downward travel not upward.
gonzo416 is offline   Reply With Quote
Old 01-13-2012, 05:48 AM   #1229
Tech Apprentice
 
Join Date: Jun 2004
Location: Reykjavik, Iceland
Posts: 73
Send a message via MSN to Emil
Default

Quote:
Originally Posted by Mera'din View Post
I am using the dynamite gauges and this has got me thinking about the values. I wonder how these compare as I have just been using the 5 and 6 that the setup sheet suggests.

What droop values do these numbers give you? 2mm of drrop seems to come up a bit but wouldn't it be different front and rear is using 6 and 5 as your downstops values?
Maybe I should have said "may not match". I found this out when a friend was using an HPI tool that was +1 mm different. I will measure the HUDY gauge settings 5 and 6 tonight and post a reply asap (I am guessing 15mm and 16mm respectively). I think that is the easiest way to compare to the Dynamite tool.

- Emil
Emil is offline   Reply With Quote
Old 01-13-2012, 09:36 AM   #1230
Tech Master
 
ByteStream's Avatar
 
Join Date: Jan 2010
Location: 5280 Raceway
Posts: 1,142
Trader Rating: 2 (100%+)
Default

For those that care .. I setup my new car off the basic carpet setup sheet with a ride height of 5mm, shock length of 63.5mm and a rear downstop value of 5 and it ended up being a droop value of 3.5mm over ride height .. Yikes!
__________________
RCAmerica | Xray | Hudy | KO Propo | Hobbywing HWNA | R1Wurks | BSR Tires
5280 Raceway - www.5280raceway.com
MILE HIGH INDOOR CHAMPS April 20-23rd 2017 @ www.milehighindoorchamps.com
ByteStream is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Xray T3 2011 entitymugenmtx Electric On-Road 4150 05-19-2014 12:53 PM
Xray T3 2011 New in Box olhipster1 R/C Items: For Sale/Trade 19 08-04-2011 05:27 AM
XRAY T3 2012 bila nk keluar? bravolous Malaysian R/C Racers 8 06-16-2011 11:58 PM
Xray T3 nitro rat Australia For Sale/Trade 22 09-19-2010 03:11 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 08:59 AM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net